That's basically what it was, Lanya, a coup d'etat. Some European publications described it exactly that way, and I think Indira Gandhi said pretty much the same thing without using those words.
The European or Latin American coup d'etat is a bit different, though, they're usually engineered to put a specific person or clique into power. In the USA, the coup seems to be more towards removing somebody from power, somebody who's seen as dangerous to the power elite or to the national interest (as seen by the state security types) and just sort of trusting the elite to pick its next leader a little more carefully, not to make the same mistake twice, in other words.
Nobody will ever know the specific assassins or even what agency or agencies they came from, and in fact there's a very good book by a Canadian career diplomat whose name I forget called "Deep Politics and the Assassination of JFK," which makes the point that because of the incredibly deep and complex interrelationship of America's intelligence agencies, big business, organized crime, police and politics, ANY investigation of the assassination will inevitably involve the investigators basically investigating themselves and thus will never be able to get to the bottom of it.
